Spring RTS 104.0

CHANGELOG [EN]
— 104.0 ——————————————————–Major :
– Add LuaMenu – an unsynced stripped down Lua environment that starts before the game is loaded and persists through reload
this environment receives the Draw{Genesis,Screen,ScreenPost} callins as well as
a special AllowDraw FPS limiter which enables these if true is returned from it
(otherwise they are called once every 30 seconds)

! make GL3.0 the minimum required OpenGL version; Intel G45’s and other relics are now banned
(any driver that claims support for this *and* shaders is allowed to run Spring unimpeded)
– improve memory management so Spring.Reload can be safely called multiple times in a row
– kill various desyncs that slipped into 103.0